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Finding the Fourth Proportional to 886,705.80, 1,330,253.10 and 437,641.80

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Solution

The fourth proportional to 886,705.80, 1,330,253.10 and 437,641.80 is: 656,558.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,705.80 : 1,330,253.10 = 437,641.80 : x
  2. Step 2: Convert to fraction form
    886,705.80/1,330,253.10 = 437,641.80/x
  3. Step 3: Cross multiply
    886,705.80x = 1,330,253.10 × 437,641.80
  4. Step 4: Simplify right side
    886,705.80x = 582,174,361,139.58
  5. Step 5: Solve for x
    x = 582,174,361,139.58/886,705.80
  6. Step 6: Final answer
    x = 656,558.65

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.